S&P 500 is showing signs of institutional selling: Sell Imbalance sits at -$115.3 million
Following the Big Money in S&P 500 Stocks
So far in trading today, the S&P 500 ETF is down 0.9%. SPY stock last traded at $674.85. Large volume bursts in S&P 500 stocks reached 44.0 million shares worth a total of $7.5 billion in transactions. There was notable buy pressure in the Technology and Health Care sectors. Overall, sell volume pressure exceeded buy volume pressure by 3.3%. There were 134 stocks that had more buy pressure on balance, and 168 stocks that had more sell pressure from large institutions. As a whole, there was a net negative -$115.3 million in dollar volume trades. A greater amount of the trading volume occurred on lit exchanges, at 55.4%, compared with 44.6% being transacted in the dark pool. To learn more about large volume trades, check out our help section.
Daily Chart: Large Volume Bursts Over Time
As you can see from the chart below, the most recent cumulative sell imbalance is -$115.3 million, however, the furthest sell imbalance for the day occurred at 1:00 PM, when the net sell dollar volume was -$332.7 million. The highest cumulative buy imbalance occurred at 10:45 AM, when the net buy hit +$174.8 million. The largest spike in imbalance came between 11:00 AM and 11:15 AM when the sell pressure surpassed the buy pressure by a 4.4 to 1 ratio.
Flow by Sector
Technology had the largest dollar volume bursts of all the SPDR sectors, with buy dollar volume exceeding sell dollar volume by $231.0 million. 26 of the Technology stocks had positive dollar balance, versus 30 that were net negative.
Individual Stocks
OXY stock had the single biggest volume burst activity of all the S&P 500 stocks. Sell volume bursts outpaced buy volume by 1.6 million shares. As of this afternoon, the average trade price on sell volume was $53.68. Even though the sell pressure has been significant, the stock price has risen $1.01 on the day.

